I would try to get some tech on the crank thing from some racer types or talk with an experienced machinist who has done stroker cranks. I honestly have no idea if it would cause a problem or not. Just seems like it might make a rough running, unbalanced engine.
I got an LC stroker crank by accident last year and I sold it to a guy for $400. Kind of wished I would have kept it around but I just don't want to build a strung out engine.
I am probably the only guy on here that thinks this way but after running a 22re, a 3RZ and a carb 22r of the three I am liking my carb 22r the best of all of them. I just played around with the main jet and I picked up 10 mph on hills finding the proper jet. It's so fun to be able to tune on your lunch break with no electronics using only a screw driver and one wrench.
You need to get ahold of Glen (79coyotefrg I think). He's the guy in the hospital right now. He is the resident 20r hybrid/weber/make my Toyota snap speedo expert.